President Bronislaw Komorowski unveiled The Free Speech Memorial in Mysia Street in Warsaw on Thursday, close to where the Main Office for the Control of Press, Publications and Performances, known as “censorship office” was situated during communist times.

The memorial commemorates the underground publishing movement in Poland in the years 1976-1989.

Polish President said at the ceremony that only Poland had had such a mass-scale underground publishing movement - "mass not only in the number of titles, the number of printing shops, the number of readers, but the huge number of brave people who edited, printed and distributed."

He also said that everyone should remember about "the courage and contribution of those who reached for free speech, free thinking and spread it from the very beginning."

The Free Speech Memorial is a black strip of paving (symbolizing a stroke of the censor's pen) running diagonally across Mysia Street, its end going abruptly upwards where the censorship office used to be, as a symbol of the victory of free speech.